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 Android教程網 >> Android技術 >> 關於Android編程 >> Android 3d雲標簽

Android 3d雲標簽

編輯：關於Android編程

一、自定義View

public class TagCloudView extends RelativeLayout {
	RelativeLayout navigation_bar;
	TextView mTextView1;
	private final float TOUCH_SCALE_FACTOR = .8f;
	private float tspeed;
	private TagCloud mTagCloud;
	private float mAngleX =0;
	private float mAngleY =0;
	private float centerX, centerY;
	private float radius;
	private Context mContext;
	private List mTextView;
	private List mParams;
	private int shiftLeft;
	float dowx = 0;
	float dowy = 0;
	float cutx=100;
	float cuty=100;
	public TagCloudView(Context mContext, int width, int height, List tagList) {
		this(mContext, width, height, tagList, 6 , 34, 1); 
	}
	public TagCloudView(Context mContext, int width, int height, List tagList, 
				int textSizeMin, int textSizeMax, int scrollSpeed) {
		super(mContext);
		this.mContext= mContext;
		tspeed = scrollSpeed;
		centerX = width / 2;
		centerY = height / 2;
		radius = Math.min(centerX * 0.95f , centerY * 0.95f ); 
		shiftLeft = (int)(Math.min(centerX * 0.15f , centerY * 0.15f ));
		mTagCloud = new TagCloud(tagList, (int) radius , textSizeMin, textSizeMax);
		float[] tempColor1 = {0.9412f,0.7686f,0.2f,1}; //rgb Alpha 
										//{1f,0f,0f,1}  red       {0.3882f,0.21568f,0.0f,1} orange
										//{0.9412f,0.7686f,0.2f,1} light orange
		float[] tempColor2 = {1f,0f,0f,1}; //rgb Alpha 
										//{0f,0f,1f,1}  blue      {0.1294f,0.1294f,0.1294f,1} grey
										//{0.9412f,0.7686f,0.2f,1} light orange
		mTagCloud.setTagColor1(tempColor1);//higher color
		mTagCloud.setTagColor2(tempColor2);//lower color
		mTagCloud.setRadius((int) radius);
		mTagCloud.create(true); 
    	mTagCloud.setAngleX(mAngleX);
    	mTagCloud.setAngleY(mAngleY);
    	mTagCloud.update();
		mTextView = new ArrayList();
		mParams = new ArrayList();
    	Iterator it=mTagCloud.iterator();
    	Tag tempTag;
    	int i=0;
    	//取出每個數據放到TexView裡
    	while (it.hasNext()){
    		tempTag= (Tag) it.next();              
    		tempTag.setParamNo(i); 
    		mTextView.add(new TextView(this.mContext));
    		mTextView.get(i).setText(tempTag.getText());
    		mParams.add(new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));  
    		mParams.get(i).addRule(RelativeLayout.ALIGN_PARENT_LEFT);
    		mParams.get(i).addRule(RelativeLayout.ALIGN_PARENT_TOP);
    		mParams.get(i).setMargins((int) (centerX -shiftLeft + tempTag.getLoc2DX()),(int) (centerY + tempTag.getLoc2DY()),0,0);
    		mTextView.get(i).setLayoutParams(mParams.get(i));
    		mTextView.get(i).setSingleLine(true);
    		int mergedColor = Color.argb((int)(tempTag.getAlpha() * 255), (int)	(tempTag.getColorR() * 255), (int)	(tempTag.getColorG() * 255),(int) (tempTag.getColorB() * 255));
    		mTextView.get(i).setTextColor(mergedColor);
    		mTextView.get(i).setTextSize((int)(tempTag.getTextSize() * tempTag.getScale()));
    		addView(mTextView.get(i));
    		mTextView.get(i).setOnClickListener(OnTagClickListener(tempTag.getUrl()));
    		//設置每個TexView有自己指定的標簽為自己的位置，以便後期操作
    		mTextView.get(i).setTag(i);
    		i++;
    	}
    	/** 用來自動播放的*/
    	new Timer().schedule(new TimerTask() {
			
			@Override
			public void run() {
				handler.sendEmptyMessage(1);
			}
		}, 0,200);
	}
	@SuppressLint("HandlerLeak")
	Handler handler=new Handler(){
		@Override
		public void handleMessage(Message msg) {
			super.handleMessage(msg);
			mAngleX = (cuty/radius) *tspeed * TOUCH_SCALE_FACTOR;
			mAngleY = (-cutx/radius) *tspeed * TOUCH_SCALE_FACTOR;
			changPosition();
		}
	};
	@Override
	protected void onDraw(Canvas canvas){
		super.onDraw(canvas);
	}


	/**
	 * 觸發事件
	 */
	@Override
	public boolean onTouchEvent(MotionEvent e) {
		switch (e.getAction()) {
		case MotionEvent.ACTION_DOWN:
			dowx=e.getX();
			dowy=e.getY();
			break;
		case MotionEvent.ACTION_UP:
			float upx=e.getX();
			float upy=e.getY();
			cutx=upx-dowx;
			cuty=upy-dowy;
			break;
		case MotionEvent.ACTION_MOVE:	
			mAngleX = (cuty/radius) *tspeed * TOUCH_SCALE_FACTOR;
			mAngleY = (-cutx/radius) *tspeed * TOUCH_SCALE_FACTOR;
			changPosition();
			break;
		}
		
		return true;
	}
	/**
	 * 改變位置
	 */
	private void changPosition(){
		mTagCloud.setAngleX(mAngleX);
    	mTagCloud.setAngleY(mAngleY);
    	mTagCloud.update();
    	Iterator it=mTagCloud.iterator();
    	Tag tempTag;
    	while (it.hasNext()){
    		tempTag= (Tag) it.next();              
    		mParams.get(tempTag.getParamNo()).setMargins(	
					(int) (centerX -shiftLeft + tempTag.getLoc2DX()), 
					(int) (centerY + tempTag.getLoc2DY()), 
					0, 
					0);
			mTextView.get(tempTag.getParamNo()).setTextSize((int)(tempTag.getTextSize() * tempTag.getScale()));
			int mergedColor = Color.argb( (int)	(tempTag.getAlpha() * 255), 
					  (int)	(tempTag.getColorR() * 255), 
					  (int)	(tempTag.getColorG() * 255), 
					  (int) (tempTag.getColorB() * 255));
			mTextView.get(tempTag.getParamNo()).setTextColor(mergedColor);
			mTextView.get(tempTag.getParamNo()).bringToFront();
    	}
		
	}
	/**
	 * 點擊事件
	 * @param url
	 * @return
	 */
	View.OnClickListener OnTagClickListener(final String url){
		return new View.OnClickListener(){
			@Override
			public void onClick(View v) {
				
			}
		};
	}
}


二、自定義迭代器


/**
 * 自定義的迭代器
 * @author Administrator
 *
 */
public class TagCloud implements Iterable{
	private List tagCloud;
	private int radius;
	private static final int DEFAULT_RADIUS = 3;
	private static final int TEXT_SIZE_MAX = 30 , TEXT_SIZE_MIN= 4;
	private static final float[] DEFAULT_COLOR1= { 0.886f, 0.725f, 0.188f, 1f};
	private static final float[] DEFAULT_COLOR2= { 0.3f, 0.3f,  0.3f, 1f};
	private float[] tagColor1;
	private float[] tagColor2; 
	private int textSizeMax, textSizeMin;
	private float sin_mAngleX,cos_mAngleX,sin_mAngleY,cos_mAngleY,sin_mAngleZ,cos_mAngleZ;
	private float mAngleZ=0;
    private float mAngleX =0;
    private float mAngleY =0;
    private int size=0;
    private int smallest,largest;
    private boolean distrEven = true; 
    
	public TagCloud(){
		this(new ArrayList());
	}
	public TagCloud(List tags){
		this(tags,DEFAULT_RADIUS); 
	}
	public TagCloud(List tags, int radius){
		this( tags, radius, DEFAULT_COLOR1, DEFAULT_COLOR2, TEXT_SIZE_MIN, TEXT_SIZE_MAX);
	}  
	public TagCloud(List tags, int radius,int textSizeMin, int textSizeMax){
		this( tags, radius, DEFAULT_COLOR1, DEFAULT_COLOR2, textSizeMin, textSizeMax);
	}
	public TagCloud(List tags, int radius,float[] tagColor1, float[] tagColor2){
		this( tags, radius, tagColor1, tagColor2, TEXT_SIZE_MIN, TEXT_SIZE_MAX);
	}   	

	public TagCloud(List tags, int radius, float[] tagColor1, float[] tagColor2, 
						int textSizeMin, int textSizeMax){
		this.tagCloud=tags;    
		this.radius = radius;
		this.tagColor1 = tagColor1;
		this.tagColor2 = tagColor2;
		this.textSizeMax = textSizeMax;
		this.textSizeMin = textSizeMin;	
	}
	/**
	 * 重寫的方法
	 */
	@Override
	public Iterator iterator() {
		return tagCloud.iterator();
	}
	/**
	 * 創建
	 * @param distrEven
	 */
	public void create(boolean distrEven){
		this.distrEven =distrEven;
		positionAll(distrEven);
		sineCosine( mAngleX, mAngleY, mAngleZ);
		updateAll();
		smallest = 9999;
		largest = 0;
		for (int i=0; i< tagCloud.size(); i++){
			int j = tagCloud.get(i).getPopularity();
			largest = Math.max(largest, j);
			smallest = Math.min(smallest, j);
		}
		Tag tempTag;
		for (int i=0; i< tagCloud.size(); i++){
			tempTag = tagCloud.get(i);
			int j = tempTag.getPopularity();
			float percentage =  ( smallest == largest ) ? 1.0f : ((float)j-smallest) / ((float)largest-smallest);
			float[] tempColor = getColorFromGradient( percentage ); //(rgb Alpha)
			int tempTextSize = getTextSizeGradient( percentage );
			tempTag.setColorR(tempColor[0]);
			tempTag.setColorG(tempColor[1]);
			tempTag.setColorB(tempColor[2]);
			tempTag.setTextSize(tempTextSize);
		}		
		
		this.size= tagCloud.size();
	}
	/**
	 * create創建完，就需要update
	 */
	public void update(){
		if( Math.abs(mAngleX) > .1 || Math.abs(mAngleY) > .1 ){
			sineCosine( mAngleX, mAngleY, mAngleZ);
			updateAll();
		}
	}
	/**
	 * 計算每個Tag的
	 * @param distrEven 是否根據字計算位置 true為是，否則字有覆蓋的
	 */
	private void positionAll(boolean distrEven){
		double phi = 0;
		double theta = 0;
		int max = tagCloud.size();
		for (int i=1; i0)
			return color[0];
		else
			return 0;
	}
	public float getGvalue(float[] color) {
		if (color.length>0)
			return color[1];
		else
			return 0;	}
	public float getBvalue(float[] color) {
		if (color.length>0)
			return color[2];
		else
			return 0;	}
	public float getAlphaValue(float[] color) {
		if (color.length >= 4)
			return color[3];
		else
			return 0;	
	}		
	public float getAngleX() {
		return mAngleX;
	}
	public void setAngleX(float mAngleX) {
		this.mAngleX = mAngleX;
	}
	public float getAngleY() {
		return mAngleY;
	}
	public void setAngleY(float mAngleY) {
		this.mAngleY = mAngleY;
	}
	public int getSize() {
		return size;
	}	


}








三、自定義數據


/**
 * Comparable接口 可以自定義排序方式
 * @author Administrator
 *
 */
public class Tag implements Comparable{

	private String text, url;
	private int popularity;
	private int textSize;
	private float locX, locY, locZ;  
	private float loc2DX, loc2DY;
	private float scale;
	private float colorR, colorG, colorB, alpha;
    private static final int DEFAULT_POPULARITY = 1;
    private int paramNo; 
    
	public Tag(String text, int popularity) {
		this(text, 0f, 0f, 0f, 1.0f, popularity, "");
	}	
	public Tag(String text, int popularity, String url) {
		this(text, 0f, 0f, 0f, 1.0f, popularity, url);
	}	
	public Tag(String text,float locX, float locY, float locZ) {
		this(text, locX, locY, locZ, 1.0f, DEFAULT_POPULARITY, "");
	}
	public Tag(String text,float locX, float locY, float locZ, float scale) {
		this(text, locX, locY, locZ, scale, DEFAULT_POPULARITY, "");
	}
	public Tag(String text,float locX, float locY, float locZ, float scale, int popularity,
			   String url) {
		this.text = text;
    	this.locX = locX;
    	this.locY = locY;
    	this.locZ = locZ;
    	this.loc2DX = 0;
    	this.loc2DY=0;
    	this.colorR= 0.5f;
    	this.colorG= 0.5f;
    	this.colorB= 0.5f;
    	this.alpha = 1.0f;
    	this.scale = scale;
    	this.popularity= popularity;
    	this.url = url;
    }	
	
	@Override
	public int compareTo(Tag another) {
		//排序方式
		return (int)(another.locZ - locZ);
	}
	
    public float getLocX() {
		return locX;
	}
	public void setLocX(float locX) {
		this.locX = locX;
	}
	public float getLocY() {
		return locY;
	}
	public void setLocY(float locY) {
		this.locY = locY;
	}
	public float getLocZ() {
		return locZ;
	}
	public void setLocZ(float locZ) {
		this.locZ = locZ;
	}
	public float getScale() {
		return scale;
	}
	public void setScale(float scale) {
		this.scale = scale;
	}
	public String getText() {
		return text;
	}
	public void setText(String text) {
		this.text = text;
	}
	public float getColorR() {
		return colorR;
	}
	public void setColorR(float colorR) {
		this.colorR = colorR;
	}
	public float getColorG() {
		return colorG;
	}
	public void setColorG(float colorG) {
		this.colorG = colorG;
	}
	public float getColorB() {
		return colorB;
	}
	public void setColorB(float colorB) {
		this.colorB = colorB;
	}
	public float getAlpha() {
		return alpha;
	}
	public void setAlpha(float alpha) {
		this.alpha = alpha;
	}
	public int getPopularity() {
		return popularity;
	}
	public void setPopularity(int popularity) {
		this.popularity = popularity;
	}
	
	public int getTextSize() {
		return textSize;
	}
	public void setTextSize(int textSize) {
		this.textSize = textSize;
	}
	public float getLoc2DX() {
		return loc2DX;
	}
	public void setLoc2DX(float loc2dx) {
		loc2DX = loc2dx;
	}
	public float getLoc2DY() {
		return loc2DY;
	}
	public void setLoc2DY(float loc2dy) {
		loc2DY = loc2dy;
	}
	public int getParamNo() {
		return paramNo;
	}
	public void setParamNo(int paramNo) {
		this.paramNo = paramNo;
	}
	public String getUrl() {
		return url;
	}
	public void setUrl(String url) {
		this.url = url;
	}

}



四、調用








	private TagCloudView mTagCloudView;
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		this.requestWindowFeature(Window.FEATURE_NO_TITLE);
		getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
				WindowManager.LayoutParams.FLAG_FULLSCREEN);
		
		Display display = getWindowManager().getDefaultDisplay(); 
		@SuppressWarnings("deprecation")
		int width = display.getWidth();
		@SuppressWarnings("deprecation")
		int height = display.getHeight();
		List myTagList= createTags();
		mTagCloudView = new TagCloudView(this, width, height, myTagList ); 
		setContentView(mTagCloudView);
		mTagCloudView.requestFocus();
		mTagCloudView.setFocusableInTouchMode(true);
		
	}
	private List createTags(){
		List tempList = new ArrayList();
		tempList.add(new Tag("Google", 7, "http://www.google.com"));  
		tempList.add(new Tag("Yahoo", 3, "www.yahoo.com"));
		tempList.add(new Tag("CNN", 4, "www.cnn.com"));
		tempList.add(new Tag("MSNBC", 5, "www.msnbc.com"));
		tempList.add(new Tag("CNBC", 5, "www.CNBC.com"));
		tempList.add(new Tag("Facebook", 7, "www.facebook.com"));
		tempList.add(new Tag("Youtube", 3, "www.youtube.com"));
		tempList.add(new Tag("BlogSpot", 5, "www.blogspot.com"));
		tempList.add(new Tag("Bing", 3, "www.bing.com"));
		tempList.add(new Tag("Wikipedia", 8, "www.wikipedia.com"));
		tempList.add(new Tag("Twitter", 5, "www.twitter.com"));
		tempList.add(new Tag("Msn", 1, "www.msn.com"));
		tempList.add(new Tag("Amazon", 3, "www.amazon.com"));
		tempList.add(new Tag("Ebay", 7, "www.ebay.com"));
		tempList.add(new Tag("LinkedIn", 5, "www.linkedin.com"));
		tempList.add(new Tag("Live", 7, "www.live.com"));
		tempList.add(new Tag("Microsoft", 3, "www.microsoft.com"));
		tempList.add(new Tag("Flicker", 1, "www.flicker.com"));
		tempList.add(new Tag("Apple", 5, "www.apple.com"));
		tempList.add(new Tag("Paypal", 5, "www.paypal.com"));
		tempList.add(new Tag("Craigslist", 7, "www.craigslist.com"));
		tempList.add(new Tag("Imdb", 2, "www.imdb.com"));
		tempList.add(new Tag("Ask", 4, "www.ask.com"));
		tempList.add(new Tag("Weibo", 1, "www.weibo.com"));
		tempList.add(new Tag("Tagin!", 8, "http://scyp.idrc.ocad.ca/projects/tagin"));
		tempList.add(new Tag("Shiftehfar", 8, "www.shiftehfar.org"));
		tempList.add(new Tag("Soso", 5, "www.google.com"));
		tempList.add(new Tag("XVideos", 3, "www.xvideos.com"));
		tempList.add(new Tag("BBC", 5, "www.bbc.co.uk"));
		return tempList;
	}


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